ITTO970368A1 - METHOD FOR THE PRODUCTION OF FLEXIBLE DECORATIVE PAPER AND MATERIAL OBTAINED WITH THIS METHOD. - Google Patents
METHOD FOR THE PRODUCTION OF FLEXIBLE DECORATIVE PAPER AND MATERIAL OBTAINED WITH THIS METHOD. Download PDFInfo
- Publication number
- ITTO970368A1 ITTO970368A1 IT97TO000368A ITTO970368A ITTO970368A1 IT TO970368 A1 ITTO970368 A1 IT TO970368A1 IT 97TO000368 A IT97TO000368 A IT 97TO000368A IT TO970368 A ITTO970368 A IT TO970368A IT TO970368 A1 ITTO970368 A1 IT TO970368A1
- Authority
- IT
- Italy
- Prior art keywords
- melamine
- support
- formaldehyde resin
- paper
- layer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 title description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 18
- 229920000178 Acrylic resin Polymers 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000005470 impregnation Methods 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 238000005303 weighing Methods 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
- D21H23/72—Plural serial stages only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/51—Triazines, e.g. melamine
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
Landscapes
- Laminated Bodies (AREA)
- Adornments (AREA)
Description
Descrizione del Brevetto d'invenzione industriale dal titolo: Description of the industrial invention patent entitled:
"Metodo per la produzione di carte decorative flessibili e materiale ottenuto con tale metodo" a nome "Method for the production of flexible decorative papers and material obtained by this method" on behalf
DESCRIZIONE DESCRIPTION
La presente invenzione concerne un metodo di produzione di carte decorative flessibili adatte al rivestimento di superfici e profili e il materiale ottenuto con tale metodo. The present invention relates to a method of producing flexible decorative papers suitable for coating surfaces and profiles and to the material obtained with this method.
Per la produzione di carte decorative flessibili adatte al rivestimento di superfici sia piane sia curve, utilizzate per ricoprire elementi di arredamento , vengono attualmente principalmente due metodi. For the production of flexible decorative papers suitable for covering both flat and curved surfaces, used to cover furnishing elements, there are currently two main methods.
Il primo metodo prevede una prima fase in cui un supporto di carta decorativa in pura cellulosa, di peso compreso tra 50 e 100 g/m2, eventualmente stampata in rotocalco con disegni riproducenti le venature del legno o altri disegni di fantasia, viene impregnato con resine ureico-acriliche, una seconda fase in cui il supporto impregnato viene spalmato con resine melammina-poliestere del tipo acido-indurenti, ed una terza fase in cui il supporto viene essiccato in forno. The first method involves a first phase in which a support of pure cellulose decorative paper, weighing between 50 and 100 g / m2, possibly printed in rotogravure with designs reproducing the grain of the wood or other fancy designs, is impregnated with resins urea-acrylic, a second phase in which the impregnated support is spread with melamine-polyester resins of the acid-hardening type, and a third phase in which the support is dried in an oven.
Con questo procedimento è possibile ottenere carte decorative di spessore compreso fra 0,08 e 0,15 mm e di peso compreso tra 120 e 160 g/m2, note con il nome di "finish foils". With this process it is possible to obtain decorative papers with a thickness between 0.08 and 0.15 mm and a weight between 120 and 160 g / m2, known as "finish foils".
Il secondo metodo, prevede la produzione di laminato sottile continuo, comunemente denominato "CPL" o "laminatine ", mediante una prima fase, in cui una carta decorativa simile a quella descritta con riferimento al primo metodo viene impregnata con resina melammina-formaldeide opportunamente plastificata, ed una seconda fase in cui la carta impregnata viene unita per pressatura a caldo e sotto pressione ad un foglio di fibra vegetale di supporto. The second method involves the production of continuous thin laminate, commonly referred to as "CPL" or "laminates", by means of a first phase, in which a decorative paper similar to that described with reference to the first method is impregnated with suitably plasticized melamine-formaldehyde resin. , and a second step in which the impregnated paper is joined by hot pressing and under pressure to a sheet of vegetable fiber support.
Il prodotto cosi ottenuto risulta, pertanto, composto da uno- strato di carta impregnata con resina melammina-formaldeide, che conferisce durezza e resistenza superficiale e da uno strato di fibra vegetale, che conferisce flessibilità e ne favorisce il successivo incollaggio sulle superfici da rivestire. The product thus obtained is therefore composed of a layer of paper impregnated with melamine-formaldehyde resin, which gives surface hardness and resistance, and a layer of vegetable fiber, which confers flexibility and facilitates subsequent gluing on the surfaces to be coated.
Il laminato cosi ottenuto presenta uno spessore compreso tra 0,15 e 0,30 mm, un peso compreso tra 220 e 300 g/m2 e può essere postformato a caldo per essere adattato alle superfici da rivestire. The laminate thus obtained has a thickness between 0.15 and 0.30 mm, a weight between 220 and 300 g / m2 and can be hot postformed to be adapted to the surfaces to be coated.
I prodotti ottenuti con i metodi descritti, presentano, tuttavia, caratteristiche di flessibilità insufficienti a rivestire le superfici a ridotto raggio di curvatura. The products obtained with the methods described, however, have insufficient flexibility characteristics to cover surfaces with a reduced radius of curvature.
Ciò ò dovuto al fatto che il prodotto ottenuto con il primo metodo, pur essendo abbastanza sottile, tende a formare screpolature quando viene piegato oltre un certo grado; mentre il prodotto ottenuto con il secondo metodo, essendo formato da più strati, risulta di spessore elevato e, quindi, di scarsa adattabilità ai profili curvi a ridotto raggio . This is due to the fact that the product obtained with the first method, although quite thin, tends to form cracks when it is bent beyond a certain degree; while the product obtained with the second method, being formed by several layers, is of high thickness and, therefore, of poor adaptability to curved profiles with a reduced radius.
Un primo scopò della presente invenzione è, pertanto, quello di ovviare al problema di rivestire superfici con raggi di curvatura ridotti provvedendo un metodo per la produzione di carte decorative, di semplice ed economica realizzazione, che non presenti gli inconvenienti menzionati dell'arte nota. A first aim of the present invention is therefore to obviate the problem of coating surfaces with reduced radii of curvature by providing a method for the production of decorative papers, which is simple and inexpensive to manufacture, which does not have the aforementioned drawbacks of the prior art.
Un ulteriore problema riscontrato sia nei prodotti "finish foils" ottenuti con il primo metodo noto, sia nei prodotti "CPL" o "laminatino " ottenuti con il secondo metodo noto, è rappresentato dallo spessore di tali prodotti. A further problem encountered both in "finish foils" products obtained with the first known method, and in "CPL" or "laminatino" products obtained with the second known method, is represented by the thickness of these products.
Pertanto, un secondo scopo della presente invenzione è quello di ottenere carte decorative molto più sottili di quelle ottenute con i metodi noti. Therefore, a second object of the present invention is to obtain much thinner decorative papers than those obtained with known methods.
Questi ed altri scopi vengono raggiunti con il metodo secondo l'invenzione, come rivendicato nelle allegate rivendicazioni. These and other purposes are achieved with the method according to the invention, as claimed in the attached claims.
Secondo l'invenzione, le carte decorative vengono ottenute mediante l'applicazione di uno strato di resina melammina-formaldeide su un supporto cartaceo, preventivamente trattato con resina ureico-acrilica . According to the invention, the decorative papers are obtained by applying a layer of melamine-formaldehyde resin on a paper support, previously treated with urea-acrylic resin.
Il supporto cosi ottenuto viene successivamente finito mediante" pressatura a caldo, in cui lo strato di resina melammina-formaldeide viene The support thus obtained is subsequently finished by "hot pressing, in which the melamine-formaldehyde resin layer is
reticolato . reticulated.
Contrariamente a quanto avviene nel primo metodo descritto con riferimento all'arte nota, che prevede l'impiego di resine melammina-poliestere e successiva essiccazione in forno, il metodo della presente invenzione che prevede l'applicazione di resine melammina-formaldeide su supporti cartacei leggeri e la successiva pressatura a caldo, consente di ottenere carte decorative che, per la notevole flessibilità si adattano a rivestire superfici e profili anche ad elevata curvatura.. Si fornirà ora una una descrizione dettagliata dell'invenzione, con riferimento alla figura allegata illustrante uno schema a blocchi delle fasi del metodo secondo un esempio di realizzazione dell 'invenzione. Contrary to what happens in the first method described with reference to the known art, which provides for the use of melamine-polyester resins and subsequent drying in the oven, the method of the present invention which provides for the application of melamine-formaldehyde resins on light paper supports and the subsequent hot pressing, allows to obtain decorative papers which, due to their considerable flexibility, are suitable for covering surfaces and profiles even with high curvature. A detailed description of the invention will now be provided, with reference to the attached figure illustrating a diagram in blocks of the steps of the method according to an exemplary embodiment of the invention.
Con riferimento alla figura, il metodo per l'ottenimento di carte decorative flessibili secondo l'invenzione, prevede una prima fase 1 in cui viene predisposto un supporto cartaceo in pura cellulosa, di peso compreso tra 40 e 80 g/m2, una seconda fase 2 in cui detto supporto cartaceo viene impregnato, ad esempio mediante immersione, con una resina ureico-àcrilica eventualmente modificata, cui fa seguito una fase 3 di essiccazione in forno di detto supporto cartaceo . With reference to the figure, the method for obtaining flexible decorative papers according to the invention provides a first phase 1 in which a pure cellulose paper support, weighing between 40 and 80 g / m2, is prepared, a second phase 2 in which said paper support is impregnated, for example by immersion, with a possibly modified urea-acrylic resin, followed by an oven drying step 3 of said paper support.
In un esempio di realizzazione del metodo secondo l'invenzione viene utilizzata, per la fase 2 di impregnazione del supporto cartaceo, una resina ureica ottenuta per condensazione a temperatura compresa tra 90 e 100°C di urea e formaldeide che reagiscono stando in rapporto molare compreso tra 1-1.1 e 1-2, preferibilmente tra 1-1.3 e 1-1.5? durante la reazione, oppure successivamente, viene aggiunta una dispersione acquosa di polimeri acrilici termoplastici autoreticolanti nelle proporzioni di 5-50 parti in peso, preferibilmente di 10-25 parti su 100 parti di resina ureica al 55% di secco. In an example of embodiment of the method according to the invention, an urea resin obtained by condensation at a temperature between 90 and 100 ° C of urea and formaldehyde which react by being in a molar ratio is used for the step 2 of impregnating the paper support. between 1-1.1 and 1-2, preferably between 1-1.3 and 1-1.5? during the reaction, or subsequently, an aqueous dispersion of self-crosslinking thermoplastic acrylic polymers is added in the proportions of 5-50 parts by weight, preferably 10-25 parts per 100 parts of 55% dry urea resin.
Ài termine della fase 3 detto supporto raggiunge un peso che, a seconda della quantità di resina ureico-acrilica impregnante è compreso fra 60 e 100 g/m2 . At the end of phase 3, said support reaches a weight which, depending on the quantity of impregnating urea-acrylic resin, is between 60 and 100 g / m2.
Successivamente il metodo descritto prevede una fase 4 di preparazione alla stampa ed una fase 5 di stampa di motivi decorativi sul supporto cartaceo. Con riferimento alla fase 4 di preparazione alla stampa, il supporto cartaceo viene trattato con prodotti a base di resine di natura acrilica allo scopo di aumentare ulteriormente la flessibilità prima della stampa. Subsequently, the described method provides a step 4 of preparation for printing and a step 5 of printing decorative motifs on the paper support. With reference to phase 4 of preparation for printing, the paper support is treated with products based on acrylic resins in order to further increase the flexibility before printing.
Come indicato in figura con la linea tratteggiata, le fasi 4 e 5 potranno essere evitate quando non siano richiesti particolari disegni sulle carte decorative essendo sufficiente la colorazione iniziale della carta. As indicated in the figure with the dotted line, phases 4 and 5 can be avoided when no particular designs are required on the decorative papers, since the initial coloring of the paper is sufficient.
Successivamente, in corrispondenza di una fase 6, sul supporto essiccato viene applicato, su almeno una delle facce, uno strato di resina melamminaformaldeide in quantità compresa fra 5 e 25 g/m2, preferibilmente fra 5 e 10 g/m2. Subsequently, in correspondence with step 6, a layer of melamine formaldehyde resin in a quantity comprised between 5 and 25 g / m2, preferably between 5 and 10 g / m2, is applied to the dried support on at least one of the faces.
In un esempio di realizzazione del metodo secondo l'invenzione viene utilizzata per la fase 6 di applicazione sul supporto cartaceo, una resina melamminica ottenuta per condensazione a temperatura compresa tra 90 e 100°C di melammina e formaldeide che reagiscono stando in rapporto molare compreso tra 1-1.5 e 1-2, con l'aggiunta di una percentuale compresa tra le 10% in peso di modificanti e plastificanti, quali trietanolammina, glicoli e paratoluensulfonammide e additivata con 0.1-1% di tensioattivi, 0.1-1% di agenti reticolanti di natura acida e 0.1-0.5% di agenti distaccanti. In an example of embodiment of the method according to the invention, a melamine resin obtained by condensation at a temperature between 90 and 100 ° C of melamine and formaldehyde which react by being in a molar ratio between 1-1.5 and 1-2, with the addition of a percentage between 10% by weight of modifiers and plasticizers, such as triethanolamine, glycols and paratoluensulfonamide and added with 0.1-1% surfactants, 0.1-1% cross-linking agents acidic nature and 0.1-0.5% release agents.
Al termine della fase di applicazione dello strato di resina melammina-formaldeide, il supporto viene essiccato in forno, fase 7, e quindi finito sottoponendolo ad una fase 8 di reticolazione mediante pressatura a caldo in continuo tra una una coppia di nastri di acciaio ad una pressione compresa tra 10 e 50 kg/cm2, preferibilmente tra 20 e 30 kg/cm2 e ad una temperatura compresa tra 140 e 220 °C, preferibilmente tra 160 e 200 °C. At the end of the application phase of the melamine-formaldehyde resin layer, the support is dried in an oven, phase 7, and then finished by subjecting it to a crosslinking phase 8 by continuous hot pressing between a pair of steel strips and a pressure between 10 and 50 kg / cm2, preferably between 20 and 30 kg / cm2 and at a temperature between 140 and 220 ° C, preferably between 160 and 200 ° C.
La carta decorativa, ottenuta con il metodo descritto, presenta una superficie perfettamente uniforme riproducente la finitura del nastro, ed avente elevata durezza e resistenza agli agenti chimici. The decorative paper, obtained with the described method, has a perfectly uniform surface reproducing the finish of the tape, and having high hardness and resistance to chemical agents.
La carta decorativa, ottenuta con il metodo descritto, presenta uno spessore compreso tra 0,06 e 0,10 mm ed un peso compreso tra 65 e 125 g/m2. Dalle prove effettuate, il prodotto ottenuto con il metodo descritto risulta possedere maggiore flessibilità rispetto ai prodotti noti, e consente, pertanto, di essere applicato su superfici e profili fortemente incurvati. The decorative paper, obtained with the described method, has a thickness between 0.06 and 0.10 mm and a weight between 65 and 125 g / m2. From the tests carried out, the product obtained with the described method appears to have greater flexibility than known products, and therefore allows it to be applied on strongly curved surfaces and profiles.
Queste caratteristiche consentono l'applicazione della carta decorativa ottenuta con il metodo dell'invenzione ad una velocità di 50-60 m/min, molto superiore rispetto a quella normalmente conseguibile con i prodotti normalmente in uso. Secondo una variante realizzativa dell'invenzione, il metodo prevede l'utilizzo di un supporto di carta, già impregnato con resina ureico-acrilica in fase di produzione in cartiera, sul quale viene applicato lo strato di resina melamminaformaldeide . These characteristics allow the application of the decorative paper obtained with the method of the invention at a speed of 50-60 m / min, much higher than that normally achievable with the products normally in use. According to a variant embodiment of the invention, the method provides for the use of a paper support, already impregnated with urea-acrylic resin during production in the paper mill, on which the layer of melamine-formaldehyde resin is applied.
L'impregnazione con resina ureico-acrilica in fase di produzione del supporto cartaceo consente sempre di ottenere un prodotto preimpregnato molto sottile e leggero, di peso compreso tra 60 e 100 g/mz. The impregnation with urea-acrylic resin during the production phase of the paper support always allows to obtain a very thin and light prepreg product, weighing between 60 and 100 g / mz.
Secondo questa variante realizzativa dell'invenzione, la fase 1 del metodo secondo l'invenzione, prevede la predisposizione di un supporto cartaceo preimpregnato e, pertanto, già pronto ad essere avviato direttamente alla fase 4 di preparazione alla stampa, cui fanno seguito le fasi da 5 a 8 come precedentemente descritto. According to this variant embodiment of the invention, phase 1 of the method according to the invention provides for the preparation of a pre-impregnated paper support and, therefore, already ready to be sent directly to phase 4 of preparation for printing, which is followed by the phases from 5 to 8 as previously described.
Il prodotto ottenuto in questa variante realizzativa del metodo presenta uno spessore compreso tra 0,06 e 0,10 mm ed un peso compreso tra 65 e 125 g/m2. The product obtained in this embodiment variant of the method has a thickness of between 0.06 and 0.10 mm and a weight of between 65 and 125 g / m2.
Il fatto di partire da un supporto preimpregnato in fase di produzione in cartiera' conferisce al prodotto ottenuto maggiori doti di flessibilità e adattabilità a superfici e profili fortemente incurvati. The fact of starting from a pre-impregnated support during production in the paper mill gives the product obtained greater qualities of flexibility and adaptability to strongly curved surfaces and profiles.
L'impiego di supporti preimpregnati risulta inoltre particolarmente vantaggioso quando il supporto cartaceo è molto leggero e sottile. L'impregnazione dei supporti cartacei leggeri, ad esempio 40 g/m2, è infatti difficoltosa e i risultati non sono sempre soddisfacenti. Al contrario, il supporto preimpregnato in fase di produzione presenta ottime qualità di impregnazione e consente di ottenere un prodotto finito con migliori caratteristiche di flessibilità. The use of prepreg supports is also particularly advantageous when the paper support is very light and thin. The impregnation of light paper supports, for example 40 g / m2, is difficult and the results are not always satisfactory. On the contrary, the pre-impregnated support during the production phase has excellent impregnation qualities and allows to obtain a finished product with better flexibility characteristics.
Claims (8)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT97TO000368A IT1292294B1 (en) | 1997-04-29 | 1997-04-29 | METHOD FOR THE PRODUCTION OF FLEXIBLE DECORATIVE PAPER AND MATERIAL OBTAINED WITH THIS METHOD. |
| EP98103328A EP0875623A1 (en) | 1997-04-29 | 1998-02-26 | A process for manufacturing pliable decorative paper sheets and a paper laminate material obtained through such a process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT97TO000368A IT1292294B1 (en) | 1997-04-29 | 1997-04-29 | METHOD FOR THE PRODUCTION OF FLEXIBLE DECORATIVE PAPER AND MATERIAL OBTAINED WITH THIS METHOD. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITTO970368A0 ITTO970368A0 (en) | 1997-04-29 |
| ITTO970368A1 true ITTO970368A1 (en) | 1998-10-29 |
| IT1292294B1 IT1292294B1 (en) | 1999-01-29 |
Family
ID=11415680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT97TO000368A IT1292294B1 (en) | 1997-04-29 | 1997-04-29 | METHOD FOR THE PRODUCTION OF FLEXIBLE DECORATIVE PAPER AND MATERIAL OBTAINED WITH THIS METHOD. |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0875623A1 (en) |
| IT (1) | IT1292294B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MC200022A1 (en) * | 1999-09-21 | 2001-03-28 | Heller Ernst | Eco-decor system multi-phase treatment of paper intended for the laminating of supports such as particle board, wood fiber boards, plywood or other |
| WO2006130907A1 (en) * | 2005-06-06 | 2006-12-14 | Depco-Ppg Pty Ltd | Manufacture of an impregnated paper or non-woven |
| AU2006255480B2 (en) * | 2005-06-06 | 2011-05-19 | Depco-Ppg Pty Ltd | Manufacture of an impregnated paper or non-woven |
| CN112900151A (en) * | 2019-11-19 | 2021-06-04 | 佛山市西钢装饰材料有限公司 | Melamine softened paper and manufacturing process thereof |
| CN113529477A (en) * | 2021-06-11 | 2021-10-22 | 中国林业科学研究院木材工业研究所 | Impregnated adhesive, impregnated adhesive film paper and method for preparing veneer thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL274878A (en) * | 1961-02-22 | |||
| JPS5677114A (en) * | 1979-11-29 | 1981-06-25 | Nissan Chem Ind Ltd | Production of decorative laminated sheet |
| JPS62142642A (en) * | 1985-12-17 | 1987-06-26 | イビデン株式会社 | Continuous long-sized decorative sheet and continuous manufacture of long-sized decorative sheet |
| DE3724719A1 (en) * | 1987-07-25 | 1989-02-02 | Nortech Chemie | Process for printing a substrate by transfer printing |
| DE4240982A1 (en) * | 1992-12-05 | 1994-06-09 | Basf Ag | Process for the preparation of impregnated papers for surface coating |
-
1997
- 1997-04-29 IT IT97TO000368A patent/IT1292294B1/en active IP Right Grant
-
1998
- 1998-02-26 EP EP98103328A patent/EP0875623A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO970368A0 (en) | 1997-04-29 |
| EP0875623A1 (en) | 1998-11-04 |
| IT1292294B1 (en) | 1999-01-29 |
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